MCQ

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In an interference experiment, the spacing between successive maxima or minima is  $($Where the symbols have their usual meanings$)$

• A
  $\frac{\lambda d}{D}$
• ✓
  $\frac{\lambda D}{d}$
• C
  $\frac{d D}{\lambda}$
• D
  $\frac{\lambda d}{4 D}$